Loose-leaf binder



March 3, 1931. J. scHADE LOOSE LEAF BINDER Filed July- 27.- 1929 2. Sheets-Sheet l III In van/0r 70k]? Ecaae March 3, 1931. J. SCHADE LOOSE LEAF BINDER Filed July 27. 1929 2 Sheets-Sheet 2 Patented Mar. 3, 1931 series PATENT JOHN SCHADE, OF HOLYOKE, M'ASSAGHUSETTS, ASSIGNOR TO NATIONAL BLANK BOGK COMPANY, OF HOLYOKE, MASSACHUSETTS, A CORPGBATION OF IIIASSAGHUSETTS LOOSE-LEAF BINDER,

Application filed July 27,

This invention relates to loose leaf binders that are composed of two sections hinged together at the bottom and that have curved prongs for the sheets contained within the book. 7

The object of the invention is to provide such aconstruction as will enable sheets to lie flat against the covers without opening the sections.

In books of this type, in order that the sheets may lie substantially flat for wrltlng purposes it has been necessary to open the book to such a degree as would cause the prongs to be partially disengaged from many of the sheets, when'the latter are shifted from one side of the book to the other, but the present invention overcomes this defect by securing the prongs to the hinge sections in such a manner that the sheet-containing portions 01: the prongs are wholly above said sections.

In the accompanying drawings which form 1 a part of this application Figure 1 is an inside View of the book with the sections closed and the covers broken away and open- Figure 2 is a similar view with the sections openv Figure 3 is aside elevation or the book with the cover and fiber facing of the side broken away-i- I Figure 4 is a section at the line 1-4 of F 1gure'l with the curved prongs in elevation Figure 5 is a section at the line 5-5 of Figure 1 Figure 6 is a section at the line 6-6 01 Figure 2, and

Figure 7 is a section at the line 7-7 of Figure lshowing leaves or sheets opened and lying substantially fiat against the covers.

Similar numerals of reference denote like parts in the several figures of the drawing.

1, 2, are the sections of the book having at the inner edges of their bottom portions hinge eyes 8, 4:, which are alined and a pintle '5 inserted therethrough.

6, 7, are the ends'of these sections 1, 2, which ends closely abut each other when the sections are closed.

8. 9, are the sides of these sections 1 and 2 which rise substantially at right angles from 1929. Serial No. 381,412.

the bottom 01: the sections, and the upper edges of these sides are curled outwardly and then downwardl in a vertical line, as shown at 10 and 11, these curled edge portions being cut away at 12 and 13, for the purposes presently to be explained. At one end of the sections a latch lever 14.- is pivoted at 15 to the inside face of one end of the section 1, and has a linger piece 16 which extends upwardly and o *erhangs the upper edge of thisend, and a wire spring 17 is coiled around the pivot 15 and one terminal is secured over a pin 18 that extends from the latch lever 14 while the other terminal bears against the inner face of the side 8, the function of this spring being to normally force 1 the latch lever downwardly in engagement with a stud .19 that extends from the inner face of the adjacent end '2' of the section 2, as shown at Figure 5, where the sections are shown locked together by means ofthis latch lever.

When the latch lever is released by depressing the finger piece 16, and the sections opened as shown at Figure 6, this lever will, by the force oi the spring, strike against one of the hinge portions at the bottom of the sections, so as to prevent the end of this latch lever from getting out of the field of engagement with the stud 19 when the sections are closed.

20 are the curved prong members that eX- tend from the section 1,, and 21 are the similar members that extend from the section 2.

These curved prong members extend wholly above the curled portions 10 and 11 of the respective sections and are comparatively straight immediately above said portions. and have straight base terminals 22 and 23 which extend through these curled edges and lie flat against the outer aces of the sections and are firmly secured thereto, preferably by extending them at an angle through the sides of the sections and riveting them thereto, as shown at 2 1 and 25, and the curved portions of these prongs slightly above the edges 10, 11, coincide with curves described from the hinge center of the sections 1 and 2.

26 and 27 are the side covers which have hinge plates 28 and 29 that are secured in any suitable manner to the covers, and these hinge plates are provided at their inner ends with hinge eyes 30 and 31 through, which are inserted short pintles32 and 33 which project beyond the hinge eyes and are housed within the curled portions 10, 11, with the hinge eyes occupying the cu away poi-ti 'ns 12 and 13.

in order to prevent l0 and ii, clocks 3-2, on, o. t terial, are placed immediately I hinge eyes 30 and 31, and these bioeirs are securec 'to the sides or" the sections, or held in place by nher tacings 3S and 3'? which are secured to the bottoms and sides of the sections 1 and 2.

The side covers are. composed of thick beneath the tions of said sides 2. A loose leaf hinder, comprising'two sections hinged together at their-hacks and having upstanding sides which are curved outart ly and downwardl at their upper edges, prongs projecting upwardly from said curved portions terminating in curves described from the co; of said hinge, the lower ends prongs being wholly above said of said prongs terminating in bent portions which pass thr eted thereto. a

in testimony whereof I afiix my signature hereto; 7 JOHN SCHADE. V

ugh said sides and are rivtacings 26 andQZ which really constitute the actuai covers, and to which the hin e plates ,{Oith from one side of the book to the other without the shghtest danger of becoming freed from the prongs, as would be the case it the sets-oi prongs'were open. r

The nose of thelatoh iever 14 is beveled so that it will ngage the stud l9 and be raised and allowed to be forced into latching engagement therewith when the sections are closed;

But it is not necessary to open the sections, as shown at Figures 2 and'G, except for the purposeot removing or adding sheets.

This'disposition of the curved prong members overcomes the disadvantages of constructionsheretofore used in which the lower leatholding portions of said members are below the sides of the book, since in this latter in= stance the leaves must rise upwardly and pass over. said sides before they can lie against the side covers, thus rendering writing on the leaves difficult, laborious and unsatisfactory.

What is claimed is 1. A loose leaf binder, comprising two sections hinged together at their backs and having upstanding sides the upper edges of which are curved outwardly and downwardly and have spaced cut-away portions, side covers having nnge plates, said plates having hinge eyes located within said cut-away portions and short pintles therein which are housed within said curved edges, biocks beneath said eyes and. secured to said sides, and curved prongs secured to said sides and extending upwardly and then inwardly toward each other in parallelism, the leatholding por- 

